(Photo credit: Gregory Fisher-Imagn Images)The New York Mets face an uncertain decision over Kodai Senga's postseason role after the right-hander faltered in a minor league tune-up. Senga, who agreed to a rare option to Triple-A Syracuse earlier this month to reset his mechanics, surrendered four runs over 3 2/3 innings on Thursday against Lehigh Valley, Philadelphia's Triple-A affiliate. Manager Carlos Mendoza, asked Thursday if Senga was assured a spot on a potential playoff roster, couldn't give a definitive answer. Senga is not eligible to rejoin the major league club until Saturday, but the Mets are planning a simulated session next week instead of another minor league start with Syracuse's season ending Sunday. Senga, an All-Star in 2023 who logged three playoff appearances last October, could yet resurface in the bullpen if the Mets advance.